Removable switch plug



June 24, 1930.

o. v. LE'MAY REMOVABLE SWITCH lfLUG Filed Nov. 11, P927 Patented June 24, 193(l g UNITED STATES" "oFFIcE' OMER v. LEMAY, or PowERs, mam s REMOVABLE SWITCH PLUG Application filed November 11, 1927. Serial No. 232,642.

The present invention is directed to improvements in switch plugs.

The primary object of the invention is to provide a device of this character so constructed that an auxiliary plug can be easily and quickly attached thereto and guided in its movement while being attached.

Another object of the invention is to provide a plug capable of being attached to an" appliance, such as an iron, toaster'or the like,

Referring to the drawing, 1 designates a switch plug provided with switch rods 2 and 3, which, as customary, control the interior switch construction to be later explained.

An attachment 3 for use in connection with the plug is provided and is formed from a single blank of suitable sheet metal so bent as to provide a sleeve t-having formed integral with the upper edge thereof, a vertically disposed strap which has carried thereby a guide collar 6, the upper end of which is flared, as at 7 to enable the auxiliary plug 7 to more readily enter the collar for engagement with the contact prongs which v lead from the plug 1 and which forms an important part of the invention.

The metal forming the sleeve 4 is bent upon the switch plug 1 and with suflicient force to maintain the same firmly in place thereon,

the strap 5 serving to hold the guide collar 6 in such position that the prongs 8 will extend thereinto in order that when the auxils .by the prong 8 upon the left.

which is fixed to the switch arm and the other tothe sections 12 of the plug 1, which, as usual, is formed from separable sections 12 and 13. As shown in Figure 1, the switch arm is engaged with one of the contact prongs 8 and one of the contact strip 14:, thus closing the circuit so that when the auxiliary plug is engaged with both prongs 8 current will flow to the appliance. The prongs 8 and strips 14: are confined within the section 12 '60 in'order that the rods may slide thereonwhen the sections are in their assembled relationship. To break the circuit, the rod 3 is pushed inwardly, thus causing the beveled edge of the cam to depress the arm 10, which compresses the spring 11 and slides said arm downwardly. As soon as thepeak 15 of'the cam clears the upper end of-the arm 10, the spring will expand, thus forcing the arm upwardly and to the left, whereit will be v maintained out of contact with the prong 8 upon the right and strip 14: until it is again desired to close the. circuit. The swinging movement of the arm 10 to the left is limited 7 5 It will beobvious that when the arm 1 is'engaged with either beveled edge of the in their proper positions. I

From the foregoing description it will be seen that a plug has been provided which is extremely simple in construction, and one which canbe manufactured at'a very small cost and to which anauxiliary'plug can be conveniently attached and guided in its movement while being attached.

Having thus. described the invention, I claim:

1. A device of the class described comprising a sleeve for attachment to a switch plug, said sleeve having a guide collar carried thereby and spaced above the upper end of the sleeve toprovide a guide, as and for the purpose set forth. i

2. A device of the class described compris cam the switch rods 2 and 3 will be maintained 'ing a sleeve for attachment to a switch plug having contact prongs extending therefrom,

said sleeve having a strap extending upwardly therefrom, and a guide collar carried by the upper end of the strap and maintained in spaced relation from the sleeve by said strap, said prongs being extended into the collar.

3. A device of the class described formed from a single blank of metal so bent as to provide a sleeve for attachment to a switch plug, a guide collar, and a strap having its lower end integrally connected with the sleeve and its upper end integrally connected with the collar.

In testimony whereof I afiix my signature.

OMER V. LEMAY. [L. s.] i 

